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Combination Switch Inspection

WARNING: This page is about a different car, the 2008 Infiniti FX45 and 2008 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
  1. SYSTEM CHECK 

    Referring to table below, check which system malfunctioning switch belongs to.

    COMBINATION SWITCH MALFUNCTION CHART

    System 1 System 2 System 3 System 4 System 5
    - FR WASHER FR WIPER LO TURN LH TURN RH
    FR WIPER HI - FR WIPER INT PASSING HEAD LAMP1
    INT VOLUME 1 RR WASHER - HEAD LAMP2 HI BEAM
    RR WIPER INT INT VOLUME 3 AUTO LIGHT - LIGHT SW 1ST
    INT VOLUME 2 RR WIPER ON - FR FOG -

    >> Check the system to which malfunctioning switch belongs, and GO TO 2.

  2. SYSTEM CHECK 

    CONSULT-III DATA MONITOR

    1. Select "COMBI SW" of BCM data monitor item.
    2. Confirm that other switches in malfunctioning system operate normally.

      3. Example: When the HI BEAM switch is malfunctioning, confirm that "TURN RH", "HEAD LAMP 1" and "LIGHT SW 1 ST" in System 5, to which the HI BEAM switch belongs, turn ON-OFF normally.

    Without CONSULT-III

    Operating combination switch, and confirm that other switches in malfunctioning system operate normally. Example: When the HI BEAM switch is malfunctioning, confirm that "TURN RH", "HEAD LAMP 1" and "LIGHT SW 1 ST" in System 5, to which HI BEAM switch belongs, turn ON-OFF normally.

    Check results 

    Other switches in malfunctioning system operate normally.>> Replace lighting switch or wiper switch.

    Other switches in malfunctioning system do not operate normally.>> GO TO 3.

  3. CHECK HARNESS BETWEEN COMBINATION SWITCH AND BCM 
    1. Turn ignition switch OFF.
    2. Disconnect BCM connector and combination switch connector.
    3. Check for continuity between BCM harness connector (A) of the suspect system and the corresponding combination switch connector (B).
      Fig 1: Checking Continuity Between BCM Harness Connector And Combination Switch Harness Connector
      G04922816Courtesy of NISSAN MOTOR CO., U.S.A.
      BCM HARNESS CONNECTOR AND COMBINATION SWITCH HARNESS

      Suspect system BCM Combination switch Continuity
      Connector Terminal Connector Terminal
      1 M3 Input 1 6 M17 6 Yes
      Output 1 36 1
      2 Input 2 5 7
      Output 2 35 2
      3 Input 3 4 10
      Output 3 34 3
      4 Input 4 3 9
      Output 4 33 4
      5 Input 5 2 8
      Output 5 32 5
    4. Check for continuity between each of BCM harness connector in suspect malfunctioning system and ground.
      5. Fig 2: Identifying Continuity Between BCM Harness Connector And Ground
      G04878698Courtesy of NISSAN MOTOR CO., U.S.A.
    BCM HARNESS CONNECTOR AND GROUND

    Suspect system BCM connector Terminal Ground Continuity
    1 M3 Input 1 6 No
    Output 1 36
    2 Input 2 5
    Output 2 35
    3 Input 3 4
    Output 3 34
    4 Input 4 3
    Output 4 33
    5 Input 5 2
    Output 5 32

    OK or NG 

    OK: Check BCM input/output signal of malfunctioning input/output.

    • Input: GO TO 4.
    • Output: GO TO 5.

    NG: Repair harness or connector.

  4. CHECK BCM INPUT SIGNAL 
    1. Connect BCM connector and combination switch connector.
    2. Turn ignition switch ON.
    3. Lighting switch and wiper switch are turned OFF.
    4. Set wiper intermittent dial position 4.
    5. Check BCM input terminal voltage waveform of suspect malfunctioning system.
      6. Fig 3: Checking BCM Input Terminal Voltage Waveform Of Suspect Malfunctioning System
      G00469290Courtesy of NISSAN MOTOR CO., U.S.A.
    BCM OUTPUT TERMINAL

    Suspect system (+) (-) Reference value
    BCM Connector Terminal
    1 M3 6 Ground Refer to Terminals and Reference Values for BCM .
    2 5
    3 4
    4 3
    5 2

    OK or NG 

    OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".

    NG: Open circuit in combination switch, GO TO 5.

  5. CHECK BCM OUTPUT SIGNAL 
    1. Connect BCM connector and combination switch connector.
    2. Turn ignition switch ON.
    3. Lighting switch and wiper switch are turned OFF.
    4. Set wiper intermittent dial position 4.
    5. Check BCM output terminal voltage waveform of suspect malfunctioning system.
    Suspect system (+)   (-) Reference value
      BCM connector Terminal
    1 36
    2 35
    3 M3 34 Ground
    G04922818Courtesy of NISSAN MOTOR CO., U.S.A.
    4 33
    5 32
    Fig 4: Checking BCM Output Terminal Voltage Waveform Of Suspect Malfunctioning System
    G00469291Courtesy of NISSAN MOTOR CO., U.S.A.
  6. CHECK COMBINATION SWITCH 

    Referring to table below, perform combination switch inspection.

    COMBINATION SWITCH REFERENCE CHART

    Procedure
    1 2 3 4 5 6 7
    Replace lighting switch Confirm check results OK INSPECTION END Confirm check results OK INSPECTION END Confirm check results OK INSPECTION END
    NG Replace wiper switch NG Replace switch base NG Confirm symptom again

    >> INSPECTION END 

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